11.1 A Direct 12V/24V-to-1V 3W 91.2%-Efficiency Tri-State DSD Power Converter with Online V<sub>CF</sub> Rebalancing and In-Situ Precharge Rate Regulation

Wei, Kang; Ramadass, Yogesh; Brian, D.

doi:10.1109/isscc19947.2020.9063087

Cited by 26 publications

(4 citation statements)

References 2 publications

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“…To further extend the VCR, more switches and capacitors can be employed in front of the DSD topology [24]- [27]. The high voltage pre-stage may have a different switching frequency FSW with the post-stage DSD [25]. An SC ladder topology is merged with DSD in [26].…”

Section: Buck With Transient Enhancement Vcr Extension and Dcm [20] [21]mentioning

confidence: 99%

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

Lu,

Huang,

Tong

et al. 2024

IEEE Open J. Solid-State Circuits Soc.

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With the surging demands for higher current at sub-1V supply level in high performance digital systems, high-efficiency and high-current-density power converters are essential for system integration. Higher voltage supply buses are emerging for high current applications to reduce the IR losses on the power delivery networks. Thus, there is a wide voltage gap between the power bus and the digital supply rails at the point-of-load (PoL). Meanwhile, battery-powered portable or wearable devices favor extremely high-power-density solutions, calling for novel power conversion topologies, which has been the hottest topic in the power management IC area in the past decade. This paper reviews the switched-capacitor-inductor (SCI) hybrid DC-DC buck converters from the topology "seeds" to their "leaves". Here, we define six seeds, they are: 1) three-level buck, 2) double-step down buck, 3) inductor-first buck, 4) always-dual-path buck, 5) buck-buck, 6) multiple-output hybrid buck. We try to analyze and summarize their pros and cons, and to derive the evolution of the hybrid DC-DC converters, with milestone examples. Then, we share our observations, design intuitions and suggestions to help the researchers and engineers to pick up and design a new SCI hybrid DC-DC converter.

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Section: Buck With Transient Enhancement Vcr Extension and Dcm [20] [21]mentioning

confidence: 99%

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

Lu,

Huang,

Tong

et al. 2024

IEEE Open J. Solid-State Circuits Soc.

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“…We can see several of these good examples in recent ISSCC papers [13−15] . Meanwhile, transistor stacking technique can be easily applied here to withhold high voltage stress with two or more lowvoltage transistors, improving the switch's figure-of-merit (FoM) [16] .…”

Section: One Good Low-side Power Switchmentioning

confidence: 99%

Favorable basic cells for hybrid DC–DC converters

Lu¹,

Cai²,

Huang³

2023

J. Semicond.

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“…8 explains this efficiency improvement. It shows the measured scaling of C J in series to C BOX [C BOX,J , (7)] with the voltage across C J for three different connection types. The voltage across C J is applied via the connection of the voltage source V BUR to the buried layer BUR of C J (shown in Fig.…”

Section: A Parasitic Capacitancesmentioning

confidence: 99%

A Resonant One-Step 325 V to 3.3–10 V DC–DC Converter With Integrated Power Stage Benefiting From High-Voltage Loss-Reduction Techniques

Rindfleisch

Wicht

2021

IEEE J. Solid-State Circuits

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This work presents a self-timed resonant highvoltage (HV) dc-dc converter in HV CMOS silicon-on-insulator (SOI) with a one-step conversion from 100-325 V input down to a 3.3-10 V output, optimized for applications below 500 mW, such as IoT, smart home, and e-mobility. Unlike bulky power modules, the HV converter is fully integrated, including an on-chip power stage, with only one external inductor (10 µH) and capacitor (470 nF). It reaches a high power density of 752 mW/cm 3 , an overall peak efficiency as high as 81%, and a light-load efficiency of 73.2% at 5 V and 50 mW output. HV loss-reduction techniques are presented and experimentally confirmed to offer an efficiency improvement of more than 32%. Integrated HV insulated gate bipolar transistors (IGBTs) are discussed and implemented as an attractive alternative to conventional integrated HV power switches, resulting in ∼20% smaller area at lower losses.

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11.1 A Direct 12V/24V-to-1V 3W 91.2%-Efficiency Tri-State DSD Power Converter with Online V_CF Rebalancing and In-Situ Precharge Rate Regulation

Cited by 26 publications

References 2 publications

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

Favorable basic cells for hybrid DC–DC converters

A Resonant One-Step 325 V to 3.3–10 V DC–DC Converter With Integrated Power Stage Benefiting From High-Voltage Loss-Reduction Techniques

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11.1 A Direct 12V/24V-to-1V 3W 91.2%-Efficiency Tri-State DSD Power Converter with Online VCF Rebalancing and In-Situ Precharge Rate Regulation

Cited by 26 publications

References 2 publications

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

Favorable basic cells for hybrid DC–DC converters

A Resonant One-Step 325 V to 3.3–10 V DC–DC Converter With Integrated Power Stage Benefiting From High-Voltage Loss-Reduction Techniques

Contact Info

Product

Resources

About

11.1 A Direct 12V/24V-to-1V 3W 91.2%-Efficiency Tri-State DSD Power Converter with Online V_CF Rebalancing and In-Situ Precharge Rate Regulation